liOSACE.E. 22 1 



This variety differs from the type in having much shorter carpels, 

 nearly .>!)> >lt-t? styles, and very much shorter calyx-loin -s. 



SpiraBa morrisonicola HAYATA (PI. XXIII.) Materials for a Flora of 

 Formosa p. 89. Shrub dwarfish glabrous. Leaves alternate, subsessile, ovate, 

 obtuse at the apex, acute at the base, or cirneate, 1^ cm. long, denticulate from 

 the middle upwards, entire towards the base, veins impressed above, 

 prominent beneath. Fruits on terminal racemosely cymes. Carpels 2 mm. 

 long, shortly beaked. 



HAB. in Mt. Morrison. 



The present plant is distinguished from other species of the genus by 

 it* small and glabrous form. 



Spiraea prunifolia SIEB. et Zrcc. fl. simplici, MATSUM. et HAYATA 

 Enum. PI. Formos. p. 110, t. 12, et HAYATA Fl. Mont, Formos. p. 78. Shrub. 

 Leaves alternate petiolate, elliptical, 13-18 mm. long, 9-12 mm. broad, entire 

 downwards, serrulate upwards, (serrulas actuVi, subglabrous or sparingly 

 pubescent above, sericeo-tomentose beneath, petioles 2-3 mm. long. Flowers 

 axillary., o-ii-clusteiv-l, pedicels 10-15 mm. long, pubescent. Flowers when 

 opened 8 mm. in diameter. Calyx persistent ; tul>e urceolately campanulate 

 o-lobed at the middle, lobes ovate, acute. Petals 5, inserted on the mouth of 

 the calyx, orbicular, shortly clawed, slightly emargiuate at the apex. Stamens 

 :/:, lu-nrly 20. 2-seriately inserted at the tlumt of the calyx, filament? 

 glabrous, base 2-glanduliferous, anthers 2 -celled, introrse. Disc camose, 

 tomentose, aduate to the calyx-tube. Carpels 5, inserted at the base of the 

 calyx, shortly stipitate, free, styles subterminal subgeniculate, stigmas capi- 

 tate. Ovary 1-c^lled, ovules y. . Carpels when matured coriaceous dehi- 

 scing by the ventral suture. Seeds pendulous, linear. 



HAB. Mt. Morrison. Xanto : Hinokiyama. Toroku, Kureikyaku, Rin- 

 kiho. 



DISTRIB. China throughout, Japan and Corea. 



The original description in " SIEB. et Zucc. Fl. Jap. p. 131 " is \\Titten 

 from a plant with doul)le flowers which is very common in Japan proper. 

 Xo specimen with simple flowers has ever been represented here at Tokyo. 



